It says I forgot to close a tag or I used something inside this tag that is not allowed but I don't see it. Where's the error?
<center>
<h1><font color="#ffffff" face="verdana" size="5">This Is My Personal Testimonial of The Scar Revision/Hair Restoration Transplant Surgery I Had Done On<br>
February 2, 2011.</font></center></h1>
Validating http://www.twinscape.com/
Error [79]: "end tag for element X which is not open"